coram



(No Model.) 3Sheets-Sheet 1.

J. G. CORAM 8t F. D. HUNTOON.

PAPER CUTTING DEVICE.

No. 475,722. Patented May 24, 1892.

(No Model.) 3.Sl1eetsSheet 2'.

J. O. GOBAM & F. D. HUNTOON. PAPER CUTTING DEVICE.

No. 475,722. 7 Patented May 24, 1.892.

(No Model 3 Sheets-Sheet 3. J. G. GORAM & F. D. HUNTOON.

PAPER CUTTING DEVICE.

No. 475,722. Patented May 24, 1892.

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UNITED STATES PATENT OFFICE.

JOHN C. CORAM AND FRANK D. HUNTOON, OF LOWELL, MASSACHUSETTS, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, TO THE AMRAYTOON PAPER TUBE COMPANY, OF SAME PLACE.

PAPER-CUTTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 475,722,dated May 24, 1892.

Original application filed September 4, 1889, Serial No. 322,944. Divided and this application filed January 31, 1891. Serial No. 379,771- (No model.)

To all whom it may concern: Be it known that we, JOHN C. CORAM and FRANK D. HUNTOON, both citizens of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of Massa chusetts, have invented a certain new and useful Improvement in Paper-Cutting Devices, of which the following is a specification.

Our invention relates to paper-cutting devices; and it consists in the devices and combinations hereinafter described and claimed, the object of which is to cut from a strip of paper pieces suitable for blanks to be formed by other appliances into tubes or other articles, such cutting-off devices being used in connection with intermittently operating feeding devices during the intervals of rest of such feeding devices.

In the accompanying drawings on three sheets, Figure 1 is a front elevation of the cutting-01f shears and the intermittently-operating feeding devices and their operat ing mechanism, showing, also, a part of a paste box and feed rolls, which apply the 2 5 paste to the paper and the mechanism which drives said feed-rolls; Fig. 2, a right-side elevation of the cutting-off shears, their operating-cam and cam-rod, the grippers and their opening mechanism, and a section, on the line 0 2 2 in Fig. 3, of the feed-chain, its guides, and the shaft which operates said grippers, and the shaft which operates said shears; Fig. 3, a front elevation of the shears, a part of its operating-shaft, its operating-cam, some grippers, a part of the feed-chain guides, one of the idle-rolls on which the feed-chain runs, and the mechanism which opens said grippers; Fig. 4, a right-side elevation of the lower part of the cam-rod and cam of the gripper-opening mechanism, and a vertical section across the shaft which carries said cam; Fig. 5, a front elevation of apart of the feedchain, its grippers, the feed-chain guide, means of opening and closing the grippers, the sprocket-wheel which drives the feedchain, and a part of the adjustable arm by means of which the feed-chain is tightened. Figs. 6 and 7 are side elevations of a gripper and a section 011 the line 6 6 in Fig. 5, of the feed-chain and its guide, and the gripperopening shaft, showing in side elevation the arm which opens the gripper, the gripper being closed in Fig. 6 and open in Fig. 7; Fig. 8,

a plan of a part of the feed-chain and its guide, the grippers, and the cam which closes the grippers.

The devices hereinafter described and claimed may be used in a variety of machines which operate to convert a pasted strip or blank of paper into tubes, boxes, or other articles, but are especially intended for machines of the class shown and described in another application, Serial N 0. 322,944., filed by us September 4, 1889, for patent for machines for making paper tubes, of which this is a division.

A is a bed or supporting-table on which are supported, directly or indirectly, all the other parts of the machine. A strip of paper B of suitable width to form one or more blanks is drawn from a suitable paper reel or holder through a paste-box C and between feed-rolls C (fully described in said other application) by means of the feed-chain D and grippers I, secured to said chain, said feed-chain and grippers having an intermittent motion by means hereinafter described.

The shaft E has an intermittent rotary motion, a spur-gear e, fast 011 said shaft, engaging a mutilated spur-gear F, which turns on So a horizontal stud f (supported on a bracket a, secured to a standard not shown) and has a continuous uniform rotation by any suitable means. As represented, the mutilated gear F is secured to a spur-gear F, and the latter is actuated through a train of gears consisting of the spur-gears F F a bevel-gear F concentric with said gear F another bevelgear F fast on the transverse shaft G, to which is given a constant uniform rotation 0 by means described in saidother application, or by any convenient means. The feed-chain D is carried on the sprocket-wheel (Z and on idle-rolls d (1 said sprocket-wheel being fast on said shaft E and having an intermittent 5 motion therewith, said feed-chain consisting of two parallel series of equal links at, the opposite links of each series being connected by the same pivot-bars (1 each series of links running in and being guided by straight parallel longitudinal grooves (l d in the adjacent faces of the feed-chain guides D D The grippers I are adjustably secured to the outer surface of the feed-chain, each gripper consisting of a plate 2', which rests against said bars (Z (being secured thereto by a clamp t" and a cap-screw 7?, running through said clamp and between said bars into said plate 1,) and is provided with one or more downhanging fingers i 17 and another plate 2' provided with an upwardly-extending arm i pivoted at i to an ear 2' on said plated and having an equal number of fingers 2' t the front faces of which are normally held against the rear faces of the fingers i 1 by one or more springs 71 compressed between the plates v1 77. To the arm i is pivoted a latch W, reaching upward through a slot in the plate '5 and having a notch r to engage with the top of an upward projection 2' on the top of said plate vland immediately above said notch, having a bevel or incline 2' extending upward and backward, so that throwing the upper end of said latch backward causes the latch to be raised by its incline riding up over said projection, and the rear edge of the plate 2' to be raised and the fingers i 2' to swing back away from the fingers 1 into the position shown in Fig. 7, where they are retained by said notch 1' engaging or hooking up over the top of said upward projection c1 until the upper end of the latch is again thrown forward to the left in Fig. 7, when the fingers will be closed or brought together by the spring 2' The grippers are caused to open by the upper end of the latch being struck by a finger il on the shaft 1, said shaft turning in the arches d, supported on the feed-chain guides and being rocked by an arm 2' reaching backward from the shaft and being jointed to a vertical rod i", made in two parts for purposes of adjustment, the upper part e of said rod being a straight round rod and the lower part of said rod i having a split sleeve i which clamps the part 1' said sleeve being closed by a screw 2' in an obvious manner. The lower end of the rod 71 is slotted to receive and be guided by the shaft G, and said rod is given a reciprocating motion by a pin r projecting from said rod, being struck by a cam G, secured 011 said shaft G. (See Figs, 2 and 4.) The gripper remains open until it again passes over the idle-pulleys and strikes the stationary cam secured to the top of the bar D which stationary cam throws the upper end of the latch forward and closes the gripper just after its fingers have reached down on opposite sides of the paperthat is, just before the gripper reaches the cuttingoff shears J. As soon as the paper is grasped by the grippers nearest the idle-roll d the paper stopsthat is, the feed chain and the feed-roll stop-and a blank 11 or piece of paper is cutoff from the end of the strip of paper by the vertical cutting-off shears J, which consist of two blades jj, pivoted near their lower ends atj upon a post or standard a supported on the bed A of the machine, each blade being provided with a segment of a gear j j concentric with its pivot 7' which takes into the gear-segment on the other blade, and one of said blades having an arm 7' which reaches down below the pivot j and is ad j ustably jointed to a cam-rod J, which is provided with a slot 7' to receive and be guided by the shaft G above named, and is also provided with a projecting pin j", which enters a cam-groove g in the cam G secured on the shaft G, so that when said last-named earn makes a half-revolution from the position it occupies in Fig. 2 the pin 3' is drawn nearest to said shaft G and draws the cam-rod J and the arm j of the blade j and closes the cutting-off shears. The further rotation of the cam G opens the shears, and as soon thereafter as the lower blank b is released by the opening of the gripper nearest the shaft E the feedchain is again set in motion until another gripper closes on the paper B, when it again stops and the shears J are again operated, the shears always cutting once between two closed grippers, but only when said grippers are at rest and the end of the paper from which the cut is made being at all times supported by a closed gripper and in readiness to be drawn between the blades of the shears by the next movement of the feed-chain.

The feeding devices herein described are not herein specifically claimed, but only in combination with the cutting devices, said feeding devices being described and claimed in another application, Serial No. 37 9,77 3, filed herewith.

We claim as our invention- 1. The cutting-off shears consisting of two pivoted blades, each having a segment of a gear concentric with its pivot and engaging a segment of the other blade, whereby the movement of one blade will cause a movement of the other blade in the opposite direction, as and for the purpose specified.

2. The cutting-off shears consisting of two pivoted blades, each havinga segmentof a gear concentric with its pivot and engaging a segment of the other blade, whereby the movement of one blade will cause a movement of the other blade in the opposite direction, a rotary shaft, and a cam fast on said shaft and adapted to cause a reciprocating movement of one of said blades upon its pivot, as and for the purpose specified.

3. The cutting-off shears consisting of two pivoted blades, each having a segmentof a gear concentric with its pivot and engaging a se ment of the other blade, whereby the movement of one blade will cause a movement of the other blade in the opposite direction, a rotary shaft, a cam fast thereon, and a rod pivoted to one of said blades and caused to IIO reciprocate longitudinally by the rotation of said cam, as and for the purpose specified.

4. The cutting-off shears consisting of two pivoted blades,each having a segmentof a gear concentric with its pivot and engaging the gear-segment of the other blade, one of said blades being provided with an arm, a rotary shaft, a cam fast thereon, and a rod pivoted to said arm and provided with a slot to receive said shaft to guide said rod, said rod being caused to reciprocate by the rotation of said cam, as and for the purpose specified.

5. The cutting-off shears consisting of two pivoted blades, each havinga segmentof a gear concentric with its pivot and engaging the gear-segment of the other blade, one of said blades being provided with an arm, a rotary shaft, a cam fast thereon and provided with a cam-groove, and a rod pivoted to said arm and provided with a slot to receive said shaft to guide said rod, said rod being provided with a laterally-projecting pin, which enters said cam-groove and causes said rod to have a longitudinal reciprocating motion when said cam is rotated, as and for the purpose specified.

6. The combination of the intermittentlytraveling feed-chain, the grippers carried thereby and adapted to hold a strip of paper by its upper edge, the cutting-off shears, and means, substantially as described, of closing said shears upon said paper when said feed chain and grippers are at rest, as and for the purpose specified.

7. The combination of the intermittentlytraveling feedchain, the grippers carried thereby and adapted to hold a strip of paper by its upper edge,'the cutting-off shears, and means, substantially as described, of closing said shears upon said paper between two closed grippers, when said grippers are at rest, whereby the end of the paper from which the out is made is at all times supported and in readiness to be drawn forward by the next movement of the feed-chain, as and for the purpose specified.

In witness whereof We have signed this specification, in the presence of two attesting witnesses, this 10th day of January, A. D. 1891.

JOHN C. OORAM. FRANK D. I-IUNTOON.

\Vitnesses:

ALBERT M. MOORE, FRANK A. GALE. 

